Revert "Move dart:web to pkg:htmlescape."

runtime/bin/builtin.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdio.h>
 
 #include "include/dart_api.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 
 
 Builtin::builtin_lib_props Builtin::builtin_libraries_[] = {
   /*      url_                    source_       has_natives_  */
   { DartUtils::kBuiltinLibURL, builtin_source_, true  },
   { DartUtils::kJsonLibURL,    json_source_,    false },
   { DartUtils::kUriLibURL,     uri_source_,     false },
   { DartUtils::kCryptoLibURL,  crypto_source_,  false },
   { DartUtils::kIOLibURL,      io_source_,      true  },
-  { DartUtils::kUtfLibURL,     utf_source_,     false }
+  { DartUtils::kUtfLibURL,     utf_source_,     false },
+  { DartUtils::kWebLibURL,     web_source_,     false }
 };
 
 
 Dart_Handle Builtin::Source(BuiltinLibraryId id) {
   ASSERT((sizeof(builtin_libraries_) / sizeof(builtin_lib_props)) ==
          kInvalidLibrary);
   ASSERT(id >= kBuiltinLibrary && id < kInvalidLibrary);
   return Dart_NewString(builtin_libraries_[id].source_);
 }
 
@@ skipping 26 matching lines @@
 }
 
 
 void Builtin::ImportLibrary(Dart_Handle library, BuiltinLibraryId id) {
   Dart_Handle imported_library = LoadAndCheckLibrary(id);
   // Import the library into current library.
   DART_CHECK_VALID(Dart_LibraryImportLibrary(library,
                                              imported_library,
                                              Dart_Null()));
 }